Table 2 Set of variables designed to assess buyer features and corruption risk. Variables of type ii) describe features of the buyers. Variables of type iii) provide information about the relationship between the buyers and suppliers. These variables are approximate versions of those proposed in [27, 28, 42], see text
Type | Variable | Short name | Detail |
|---|---|---|---|
ii) | Maximum number of Contracts by a buyer | T.Cont.Max | Maximum number of the contracts awarded by a buyer to a supplier \(\max_{j}{(T.\mathit{Cont}_{j})}\) where j represents all the suppliers contracted by a buyer, and T.Cont the number of total contracts given to each supplier |
Maximum Spending by a buyer | T.Spending.Max | Maximum amount of money spent by a buyer in contracts with a supplier \(\max_{j}{(T.\mathit{Spending}_{j})}\) where j represents all the suppliers contracted by the buyer, and T.Spending the amount of money given to each supplier | |
iii) | Fraction of single-bidder contracts | RAD | Fraction of single-bidder contracts awarded by a buyer to a supplier T.AD/T.Cont |
Favoritism | Fav | Favoritism of a buyer for a supplier as defined in [42] (0.33)∗(T.Cont/T.Cont.Max)+(0.66)∗(T.Spending/T.Spending.Max) | |
Contracts per active week | CPW | Number of contracts a supplier won with the same buyer per active week T.Cont/ActiveWeeks | |
Spending per active week | SPW | Amount of money spent by a buyer in contracts with the same supplier per active week T.Spending/ActiveWeeks |